<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
      h1{
        color: yellow;
        color: rgb(100,200,255);
        color: rgba(100,200,255,1);
        color: #ff00ff;
        color: #dc12dc;
      }
    </style>
</head>
<body>
<h1>颜色测试</h1>
</body>
</html>